/// <summary>
/// Returns a hash code for this instance.
/// </summary>
/// <returns>A hash code for this instance, suitable for use in hashing algorithms and data structures like a hash table.</returns>
public override int GetHashCode()
{
unchecked
{
return(((_sign != null ? _sign.GetHashCode() : 0) * 397) ^ (_power != null ? _power.GetHashCode() : 0));
}
}